[Feasibility] add an 'evaluate' method to run console scripts

[mastrzyz]

More advanced tests can be made calling Test hooks in the product via console.

examples:

• create a fake "call"
• Run a memory leak evaluation

Schema?

  {
    name: "evaluate",
    description: `USE VERY SPARINGLY !Run a JavaScript function in the context of the web page and retrieve results back to the Playwright environment`,
    parameters: {
      type: "object",
      properties: {
        ...intentProperty,
        script: {
          type: "string",
          description: "JavaScript function to execute in the page context",
        },
      },
      required: ["intent", "script"],
    },
  },

  if (toolName === "evaluate") {
    await page.evaluate(params.script as string);
    code.push(`await page.evaluate(\`${params.script}\`)`);
    return;
  }

I can help with implementation

[chriszyyy]

vote for this

[vhreal1302]

Please add this feature to main tools. I just use agent mode to add evaluate tool to mcp and it works so fast. It generated script to fill the whole form so fast, then fill them all in a few seconds.
If I use current mcp, it will fill one field at a time and kind of slow.

[gehuageyan]

mark